Return an error if trying to set a summary with newlines.
Review Request #569 — Created Sept. 29, 2008 and submitted
Return an error if trying to set a summary with newlines. At the moment, it's possible to create a review request that has a summary with a newline in it. This works okay until RB tries to send email with that summary as a subject, at which point it will blow up with an ugly backtrace. I considered normalizing, but that's uglier. Since this is something that can only be done via the JSON API, we might as well have the API return an error instead.